%I A018803
%S A018803 2,14,276,10980,781712,58339148,3066831440
%N A018803 Number of ways to color cells of n X n square with 2 colors so that no 
               subsquare of side >1 has all corners same color.
%Y A018803 Sequence in context: A156214 A015197 A156910 this_sequence A132695 A015015 
               A128087
%Y A018803 Adjacent sequences: A018800 A018801 A018802 this_sequence A018804 A018805 
               A018806
%K A018803 nonn,fini
%O A018803 1,1
%A A018803 David W. Wilson (davidwwilson(AT)comcast.net)